SUSANTA KUMAR DAS
Articles written in Pramana – Journal of Physics
Volume 95 All articles Published: 4 February 2021 Article ID 0011 Research Article
A detailed study is done on the growth of microstructures and sub-wavelength laser-induced periodic surface structures (LIPSSs) on silicon (Si) surface using nitrogen (N$_2$) nanosecond (ns) laser processing in air. The period of LIPSS is found to be as small as 37 nm which is close to λ/9 times the irradiated laser wavelength (337 nm). In the optimised condition the sums total of reflectance (specular reflectance + diffuse reflectance) was found to be as low as 10% for a broad wavelength range. The reflectance behaviour has been correlated with the morphology of the generated microstructures.
Volume 95, 2021
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